I have a 1992 F350 Dually with 122,000 miles.
Both front and rear gas tanks are leaking.

As long as I am replacing the tanks, should I also replace the fuel pumps considering the age and mileage of this vehicle?

Any opinions would be appreciated.

 

I would....especially if the tanks have to be dropped to replace the pumps. I would just replace the pump/motor, and not the entire unit. That will save you big bucks.